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| 1 | Adsorption of heavy metal ions from aqueous solution by carboxylated cellulose nanocrystals显示文摘A novel nanoadsorbent for the removal of heavy metal ions is reported.Cotton was first hydrolyzed to obtain cellulose nanocrystals(CNCs).CNCs were then chemically modified with succinic anhydride to obtain SCNCs.The sodic nanoadsorbent(NaSCNCs) was further prepared by treatment of SCNCs with saturated NaHCO 3 aqueous solution.Batch experiments were carried out with SCNCs and NaSCNCs for the removal of Pb 2+ and Cd 2+.The effects of contact time,pH,initial adsorption concentration,coexisting ions and the regeneration performance were investigated.Kinetic studies showed that the adsorption equilibrium time of Pb 2+ and Cd 2+ was reached within 150 min on SCNCs and 5 min on NaSCNCs.The adsorption capacities of Pb 2+ and Cd 2+ on SCNCs and NaSCNCs increased with increasing pH.The adsorption isotherm was well fitted by the Langmuir model.The maximum adsorption capacities of SCNCs and NaSCNCs for Pb 2+ and Cd 2+ were 367.6 mg/g,259.7 mg/g and 465.1 mg/g,344.8 mg/g,respectively.SCNCs and NaSCNCs showed high selectivity and interference resistance from coexisting ions for the adsorption of Pb 2+.NaSCNCs could be efficiently regenerated with a mild saturated NaCl solution with no loss of capacity after two recycles.The adsorption mechanisms of SCNCs and NaSCNCs were discussed. | Xiaolin Yu Shengrui Tong Maofa Ge Lingyan Wu Junchao Zuo Changyan Cao Weiguo Song | 2013 | Journal of Environmental Sciences2013，25，5： | 29 |
| 2 | Carbonaceous aerogel and CoNiAl-LDH@CA nanocomposites derived from biomass for high performance pseudo-supercapacitor显示文摘Conversion of waste biomass to valuable carbonaceous material is a sustainable and environmental benign method for energy and reduction of greenhouse gas emission. Herein, a two-step hydrothermal method was developed to fabricate high performance electrode material from pomelo peels. In the first step, the pomelo peels were transformed to carbonaceous aerogel(CA), which constructed of threedimensional, sponge-like brown monolith with hierarchical pores, low-density(0.032 g/cm^3) and excellent mechanical flexibility. Then, the cobalt nickel aluminum layered double hydroxide(CoNiAl-LDH) was in situ loaded on the surface of CA to form exquisite core-shell structure(CoNiAl-LDH@CA) through the second hydrothermal step. When used as an electrode material for supercapacitor, CoNiAl-LDH@CA exhibited high specific capacitances of 1,134 F/g at 1 A/g and 902 F/g at 10 A/g, respectively.Furthermore, they displayed an excellent cycling stability without an obvious capacitance decrease after 4,000 cycles. | Sidi Zhang Jian Liu Peipei Huang Hao Wang Changyan Cao Weiguo Song | 2017 | Science Bulletin2017，62，12： | 5 |
| 3 | Improving the electrochemical performance of Fe3O4 nanoparticles via a double protection strategy through carbon nanotube decoration and graphene networks显示文摘氧化铁是为锂离子电池的有希望的阳极材料,但是因为它的差的传导性和大体积变化,它通常在锂举起和版本过程期间展出差的电气化学的性质。在这个工作,为改进 Fe 的电气化学的性能的双保护策略 < 潜水艇 class= “ a-plus-plus ” > 3 O < 潜水艇 class= “ a-plus-plus ” > 通过有多围的碳 nanotubes 和减少的 graphene 氧化物网络的装饰的使用的 4 nanoparticles 被开发了。产生 MWCNTs-Fe <潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”> 4 -rGO nanocomposites 与 MWCNTs-Fe 比较展出了优秀骑车的性能和率能力<潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”> 4 , MWCNTs-Fe <潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class=“ a-plus-plus ”>身体上与 rGO 混合的 4 ,和 Fe <潜水艇class=“ a-plus-plus ”> 3 O <潜水艇class= a-plus-plus > 4 -rGO 。680 | Shuliang Yang Changyan Cao Gen Li Yongbin Sun Peipei Huang Fangfang Wei Weiguo Song | 2015 | Nano Research2015，8，4： | 4 |
| 4 | Four residues of propeptide are essential for precursor folding of nattokinase显示文摘Subtilisin propeptide 作为指导先锋合拢的 intramolecular 女伴工作。Nattokinase, subtilisin 家庭的一个成员,当由信号肽, propeptide,和一个 subtilisin 领域组成的一位先锋,和它的合拢的机制尚待被理解,被综合。在这研究,贡献先锋合拢的 nattokinase propeptide 的必要残余是坚定的。删除分析证明在 propeptide 的保存区域为先锋合拢是重要的。单个地点并且多地点 mutagenesis 研究证实了 Tyr10, Gly13, Gly34,和 Gly35 的角色。在期间上演(i) 并且(ii ) 将先锋合拢, Tyr10 和 Gly13 形成 subtilisin 的接口的部分域。当 Gly34 和 Gly35 与将稳定 propeptide 的结构的一个螺旋连接了时。四倍的翼变化, Y10A/G13A/G34A/G35A,为 propeptide 导致了女伴功能的损失。这个工作为先锋经由第二等的结构和运动参数分析合拢显示出 propeptide 的必要残余。 | Yan Jia Xinhua Cao Yu Deng Wei Bao Changyan Tang Hanjing Ding Zhongliang Zheng Guolin Zou | 2014 | Acta Biochimica et Biophysica Sinica2014，46，11： | 4 |
| 5 | Nanocarbon-based TEMPO as stable heterogeneous catalysts for partial oxidation of alcohols显示文摘Polymerized fullerene 空范围与 2,2,6,6-tetramethylpiperidine-1-oxyl (速度) 结合了成功地面对 H 260 的胺化作用被综合了 > 由 1,6-hexanediamine 的 O 2, 然后 cross-linked。空范围被 fourier 分析转变红外线的分光计,电子旋转回声和 X 光检查光电子光谱学分析,它在产品显示了没有自由激进分子的存在。当为白酒的选择氧化用作典型异构的催化剂到相应的醛或酉同类时,它展出了优秀活动,选择和再循环能力。这条合成线路方便、有效,并且可以提供一条新途径给开发使不能调动的 fullerene 有高活动和再循环能力的基于的异构的催化剂。 | Yongbin Sun Changyan Cao Fang Wei Peipei Huang Shuliang Yang Weiguo Song | 2016 | Science Bulletin2016，61，10： | 3 |
| 6 | Uniform single atomic Cu_(1)-C_(4)sites anchored in graphdiyne for hydroxylation of benzene to phenol显示文摘For single-atom catalysts(SACs),the catalyst supports are not only anchors for single atoms,but also modulators for geometric and electronic structures,which determine their catalytic performance.Selecting an appropriate support to prepare SACs with uniform coordination environments is critical for achieving optimal performance and clarifying the relationship between the structure and the property of SACs.Approaching such a goal is still a significant challenge.Taking advantage of the strong d-πinteraction between Cu atoms and diacetylenic in a graphdiyne(GDY)support,we present an efficient and simple strategy for fabricating Cu single atoms anchored on GDY(Cu_(1)/GDY)with uniform Cu_(1)-C_(4)single sites under mild conditions.The Cu atomic structure was confirmed by combining synchrotron radiation X-ray absorption spectroscopy,X-ray photoele ctron spectroscopy and density functional theory(DFT)calculations.The as-prepared Cu1/GDY exhibits much higher activity than state-of-the-art SACs in direct benzene oxidation to phenol with H_(2)O_(2)reaction,with turnover frequency values of 251 h^(-1)at room temperature and 1889 h^(-1)at 60℃,respectively.Furthermore,even with a high benzene conversion of86%,high phenol sele ctivity(96%)is maintaine d,which can be ascribed to the hydrophobic and oleophyllic surface nature of Cu1/GDY for benzene adsorption and phenol desorption.Both experiments and DFT calculations indicate that Cu_(1)-C_(4)single sites are more effective at activating H_(2)O_(2)to form Cu=O bonds,which are important active intermediates for benzene oxidation to phenol. | Jia Yu Changyan Cao Hongqiang Jin Weiming Chen Qikai Shen Peipei Li Lirong Zheng Feng He Weiguo Song Yuliang Li | 2022 | National Science Review2022，9，9： | 3 |
| 7 | Drosophila ubiquitin E3 ligase dSmurf is required for synapse remodeling and axon pruning by glia显示文摘Animal behaviors and higher-order functions rely on complex neural circuits built by synaptic connections(synapses)to deliver messages among different brain cells.As the major mediator in the nervous system,neurons communicate via synapses,which undergo constant structural remodeling with strict regulation.It | Changyan Chen Shuai Yin Wenze Cao Margaret S. Ho | 2017 | Journal of Genetics and Genomics2017，44，1： | 2 |
| 8 | Direct synthesis of ordered mesoporous ZSM-5 zeolites from in situ crystallization of carbonaceous SBA-15显示文摘Two types of ordered mesoporous ZSM-5 zeolites with different mesopores were synthesized by a two-step method. First,carbonaceous SBA-15 was produced by in situ carbonization of SBA-15/P123 composite. Then the obtained SBA-15/C composite was transformed into crystallized mesoporous ZSM-5 by impregnation TPAOH followed by steam-assisted crystallization. The final calcined samples synthesized with typical SBA-15/P123 precursor showed a wormlike morphology with the mean mesopore size of 4.6 nm, while samples synthesized with the addition of trimethylbenzene as swelling agent in the precursor exhibited the morphology of microsphere with the mesopore size of about 9.5 nm. Both two types of mesoporous ZSM-5 zeolites exhibited large surface area and mesopore structure. The steam-assisted crystallization(SAC) was performed with lower consumption of solvents. This two-step method may also be suitable for synthesizing other ordered mesoporous zeolites used as catalysts in some catalytic processes. | Fangfang Wei Qiuyun Zhang Hong Wu Changyan Cao Weiguo Song | 2017 | Science China Chemistry2017，60，12： | 1 |
| 9 | Core-shell structured nanospheres with mesoporous silica shell and Ni core as a stable catalyst for hydrolytic dehydrogenation of ammonia borane显示文摘Core-shell structured nanospheres with mesoporous silica shell and Ni core(denoted as Ni@meso-SiO2) are prepared through a three-step process. Monodispersed Ni precursors are first prepared, and then coated with mesoporous SiO2. Final Ni@meso-SiO2spheres are obtained after calcination. The products are characterized by X-ray powder diffraction, transmission electron microscopy and N2adsorption-desorption methods. These spheres have a high surface area and are well dispersed in water, showing a high catalytic activity with a TOF value of 18.5,and outstanding stability in hydrolytic dehydrogenation of ammonia borane at room temperature. | Hua Liu Changyan Cao Ping Li Yu Yu Weiguo Song | 2014 | Journal of Energy Chemistry2014，23，1： | 1 |
| 10 | Enhanced catalytic activity of perovskite oxide nanofibers for combustion of methane in coal mine ventilation air显示文摘 | Chen Chaoqiu Li Wei Cao Changyan | 2010 | Journal of Materials Chemistry2010，20，33： | 1 |
| 11 | Langmuir 显示文摘 | Cao Changyan Qu Jin Yan Wensheng Zhu Junfa Wu Ziyu Song Weiguo | 2012 | 28(9): 4573-45792012，28，9： | 1 |
| 12 | Ceria hol- low nanospheres produced by a template-free microwave-as- sisted hydrothermal method for heavy metal ion removal and catalysis显示文摘 | Cao Changyan Cui Zhimin Chen Chaoqiu | 2010 | J Phys ( hem C2010，114，21： | 1 |
| 13 | Ceria hollow nanospheres produced by a template -free micro-wave- assisted hydrothermal method for heavy metal ion removal and catalysis显示文摘 | Cao Changyan Cui Zhimin Chen chaoqiu | 2010 | J Phys Chem C2010，114，： | 1 |
| 14 | Dynamic evolution of nitrogen and oxygen dual-coordinated single atomic copper catalyst during partial oxidation of benzene to phenol显示文摘Single atom catalysts(SACs)with metal_(1)-N_(x)sites have shown promising activity and selectivity in direct catalytic oxidation of benzene to phenol.The reaction pathway is considered to be involving two steps,including a H_(2)O_(2)molecule dissociated on the metal single site to form the(metal_(1)-N_(x))=O active site,and followed by the dissociation of another H_(2)O_(2)on the other side of metal atom to form O=(metal_(1)-N_(x))=O intermediate center,which is active for the adsorption of benzene molecule via the formation of a C-O bond to form phenol.In this manuscript,we report a Cu SAC with nitrogen and oxygen dual-coordination(Cu1-N3O1 moiety)that doesn’t need the first H_(2)O_(2)activation process,as verified by both experimental and density function theory(DFT)calculations results.Compared with the counterpart nitrogen-coordinated Cu SAC(denoted as Cu1/NC),Cu SAC with nitrogen and oxygen dual-coordination(denoted as Cu1/NOC)exhibits 2.5 times higher turnover frequency(TOF)and 1.6 times higher utilization efficiency of H_(2)O_(2).Particularly,the coordination number(CN)of Cu atom in Cu1/NOC maintains four even after H_(2)O_(2)treatment and reaction.Combining DFT calculations,the dynamic evolution of single atomic Cu with nitrogen and oxygen dualcoordination in hydroxylation of benzene is proposed.These findings provide an efficient route to improve the catalytic performance through regulating the coordination environments of SACs and demonstrate a new reaction mechanism in hydroxylation of benzene to phenol reaction. | Weiming Chen Hongqiang Jin Feng He Peixin Cui Changyan Cao Weiguo Song | 2022 | Nano Research2022，15，4： | 1 |
| 15 | Breaking the activity limitation of iridium single-atom catalyst in hydrogenation of quinoline with synergistic nanoparticles catalysis显示文摘Single-atom catalysts(SACs)with the advantages of homogeneous and heterogeneous catalysts have become a hot-spot in catalysis field.However,for lack of metal–metal bond in SACs,H_(2)has to go through heterolytic dissociation pathway,which has higher barrier than homolytic dissociation pathway,and thus limits the hydrogenation activity of SACs.Herein,we propose and demonstrate through constructing synergistic iridium single atoms and nanoparticles co-existed catalyst(denoted as Ir_(1+NPs)/CMK)to boost the catalytic activity of quinoline hydrogenation.Both experimental and density functional theory calculation results confirm that Ir_(1)single sites activate quinoline,while Ir nanoparticles boost hydrogen dissociation.H atoms generated at Ir nanoparticles migrate to the quinoline bounded Ir_(1)single sites to complete hydrogenation.The Ir_(1+NPs)/CMK catalyst exhibits much higher reactivity with turnover frequency of 7,800 h^(−1)than those counterpart Ir_(1)/CMK and IrNPs/CMK catalysts,and is 20,000 times higher activity of commercial Ir/C benchmark catalyst for hydrogenation of quinoline under the same reaction conditions.This synergistic catalysis strategy between single atoms and nanoparticles provides a solution to further improve the performance of SACs for hydrogenation. | Qikai Shen Hongqiang Jin Peipei Li Xiaohu Yu Lirong Zheng Weiguo Song Changyan Cao | 2022 | Nano Research2022，15，6： | 0 |
| 16 | NO_(2) sensing with CdS nanowires at room temperature under green light illumination显示文摘Detection of ppb-level NO_(2) gas under atmosphere is urgent to meet the requirements of the rapidly developing internet of things.Compared with traditional sensing methods,light illumination has been considered as a key approach for excellent gas sensor performance under moderate conditions.Herein,we developed a green-light-assisted gas sensor based on cadmium sulfide nanowires(CdS NWs)that has good NO_(2) sensing capability at ambient temperature.The response values of NO_(2) are 236%and 11%to 10 ppm and 12.5 ppb,respectively.Furthermore,the CdS NWs sensor has a high selectivity for NO_(2) over a variety of interference gases,as well as good stability.The cleaning light activation and the sulfur vacancy-trapped charge behavior of CdS NWs are observed,which suggest a light-assisted sensing mechanism.These results suggest that light-induced charge separation behavior might significantly improve gas-sensing characteristics. | Peipei Li Hongqiang Jin Jia Yu Weiming Chen Runqing Zhao Changyan Cao Weiguo Song | 2022 | Materials Futures2022，1，2： | 0 |
| 17 | In-situ doping nickel single atoms in two-dimensional MXenes analogue support for room temperature NO_(2) sensing显示文摘MXenes are promising supports for anchoring metal single atoms due to their versatile composition,well-defined nanostructures,and suitable conductivity.However,metal single atoms are usually coordinated with surface terminal groups(-O,-OH,-Cl,etc.)of MXenes via conventional wet-impregnation,resulting in limited electronic structure modification.Through a NiCl2 molten salt etching method,we observed that Ni single atoms could be in-situ doped in the lattice of MXenes analogue TiC_(0.5)N_(0.5) support(denoted as Ni1/TiC0.5N0.5),resulting in much larger charge transfer from Ni atoms to adjacent Ti atoms,and thus increasing the electronic density of these Ti atoms.When used for NO_(2) sensing,Ni_(1)/TiC_(0.5)N_(0.5) exhibited excellent response sensitivity(ultra-low limit of detection~10 ppb),selectivity,and good stability at room temperature.This study provides an effective strategy for producing MXenes analogue supported metal single atoms for potential application in gas sensing. | Weiming Chen Peipei Li Jia Yu Peixin Cui Xiaohu Yu Weiguo Song Changyan Cao | 2022 | Nano Research2022，15，10： | 0 |
| 18 | Graphdiyne:a Highly Sensitive Material for ppb-Level NO_(2) Gas Sensing at Room Temperature显示文摘Detection of a trace amount of NO_(2) at room temperature has very important applications in air quality monitoring,protection of human health and medical diagnose.However,the existing NO_(2) sensors often suffer from low sensitivity when the concentration at the ppb-level.Here,we report a new kind of materials based on graphdiyne(GDY)for highly sensitive detection of ppb-level(ppb:part per billion)NO_(2) at room temperature.After thermal treatment of the as-prepared GDY at 600℃under argon atmosphere for 2 h(the obtained sample denoted as GDY-600),the prepared sensor with GDY-600 displays excellent sensitivity with a response value of 6.2%towards 250 ppb NO_(2) at room temperature,which is better than most of reported sensing materials.In addition,the sensor exhibits significantly high selectivity to NO_(2) against typical interfering gases including CO,CO_(2),NH_(3),H_(2),H_(2)S and toluene.Moreover,the sensor shows remarkable stability after repetitive measurements.The superior sensing performance of GDY-600 can be ascribed to the highlyπ-conjugated structure with special acetylenic bonds and abundant oxygen-containing functional groups,which are all beneficial for the gas adsorption and redox reaction on the surface. | LI Peipei YU Jia CAO Changyan SONG Weiguo | 2021 | Chemical Research in Chinese Universities2021，37，6： | 0 |
| 19 | A new approach to maintaining the structural integrity of fragile nanostructured heterogeneous catalysts with nanoscale magnetic stir bars显示文摘Three-dimensional (3D) self-assembled nanomaterials with hierarchical architectures are very attractive materials due to their superior physical and chemical properties [1-7]. Over the past few years, a variety of nanomaterials with well-controlled structures were developed and applied in many areas, including water treatment, energy, sensor and catalysis [8-16]. | Xin Zhou Changyan Cao Ruoxi Zhang Zhiheng Huang Weiguo Song | 2019 | Science Bulletin2019，64，4： | 0 |
| 20 | Advances of graphdiyne-supported metal catalysts in thermocatalytic reactions显示文摘Supported metal catalysts are widely used in the modern chemical industry.The electronic interaction between supports and active components is of great significance for heterogeneous catalysis.Graphdiyne(GDY),a new type of carbon allotrope with sp-hybridized carbon atoms,πconjugate structure,and electron transmission capability,is a promising candidate as catalyst support.Recent years have witnessed the rapid progress of GDY-supported metal catalysts for different catalysis reactions.Considering that most processes in the current chemical industry are thermocatalytic reactions,we herein give an overview about the advances and particular characteristics of GDY-supported catalysts in these reactions.The geometric structure and electronic properties of GDY are first introduced.Then,the synthesis methods for GDY-supported metal catalysts and their applications in thermocatalytic reactions are discussed,in which the effect of electronic interaction on catalytic performance is highlighted.Finally,the current challenges and future directions of GDY-supported metal catalysts for thermocatalysis are proposed.It is expected that this review will enrich our understanding of the advances of GDY as a superior support for metal catalysts in thermocatalytic reactions. | Jia Yu Yida Yang Yuliang Li Changyan Cao Weiguo Song | 2024 | Nano Research2024，17，4： | 0 |
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